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Diesel exhaust particles alter gut microbiome and gene expression in the bumblebee Bombus terrestris

Title data

Seidenath, Dimitri ; Weig, Alfons ; Mittereder, Andreas ; Hillenbrand, Thomas ; Brüggemann, Dieter ; Opel, Thorsten ; Langhof, Nico ; Riedl, Marcel ; Feldhaar, Heike ; Otti, Oliver:
Diesel exhaust particles alter gut microbiome and gene expression in the bumblebee Bombus terrestris.
In: Ecology and Evolution. (2023) . - pp. 1-35.
ISSN 2045-7758

Official URL: Volltext

Abstract in another language

Insect decline is a major threat for ecosystems around the world as they provide many important functions, such as pollination or pest control. Pollution is one of the main reasons for the decline, besides changes in land use, global warming, and invasive species. While negative impacts of pesticides are well studied, there is still a lack of knowledge about the effects of other anthropogenic pollutants, such as airborne particulate matter, on insects. To address this, we exposed workers of the bumblebee Bombus terrestris to sublethal doses of diesel exhaust particles (DEPs) and brake dust, orally or via air. After seven days, we looked at the composition of the gut microbiome and tracked changes in gene expression. While there were no changes in the other treatments, oral DEP exposure significantly altered the structure of the gut microbiome. In particular, the core bacterium Snodgrassella had a decreased abundance in the DEP treatment. Similarly, transcriptome analysis revealed changes in gene expression after oral DEP exposure, but not in the other treatments. The changes are related to metabolism and signal transduction which indicates a general stress response. Taken together, our results suggest potential health effects of DEP exposure on insects, here shown in bumblebees, as gut dysbiosis may increase the susceptibility of bumblebees to pathogens, while a general stress response may lower available energy resources. However, experiments with multiple stressors and on colony level are needed to provide a more comprehensive understanding of the impact of DEPs on insects.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Animal Ecology I
Faculties > Faculty of Engineering Science > Chair Ceramic Materials > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Stefan Schafföner
Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 01 Jun 2023 05:48
Last Modified: 01 Jun 2023 06:44